efflux pump

https://doi.org/10.1351/goldbook.12653
Transporter protein located in the membrane of cells that utilizes active transport to move a compound from the internal to the external environment.
Source:
PAC, 2013, 85, 1725. (Glossary of terms used in medicinal chemistry. Part II (IUPAC Recommendations 2013)) on page 1734 [Terms] [Paper]